- #1
Appleton
- 91
- 0
Homework Statement
find the values of x between 0 and 360
sin2x + cosx = 0
Homework Equations
The Attempt at a Solution
sin2x + cosx = 0
2sinxcosx = -cosx
2sinx = -1
sinx = -1/2
x = 210, 330
I'm guessing I lost the other solutions when I divided cosx by itself